Magnetic building block

A magnetic building block, comprising:

• a building block front side having a center opening;
• a building block back side installed on a rear end of the building block front side and having a center opening;
• four notches formed on both of the rear end of the building block front side and a front end of the building block back side;
• four small magnets disposed on the front end of the building block back side;
• four protruding chucks disposed on both of the rear end of the building block front side and the front end of the building block back side;
• an embedded paper disposed between the building block front side and the building block back side and surrounded by the notches, the small magnets and the protruding chucks;
• reinforcing ribs distributed on inner walls of the building block front side and the building block back side;
• and
• a silicone protective ring located on outer side faces of the building block front side and the building block back side,
• wherein the protruding chucks and the notches on each of the front and back sides are installed such that the front and back sides each provide a protruding chuck and a notch positioned on opposite sides of each of the four small magnets, and
• wherein the embedded paper has a shape conforming to a shape of the building block front side and the building block back side and has a center opening aligned with the center opening of the building block front side and the center opening of the building block back side.